CN109577903B - Rotary assembly of rotary blowout preventer easy to disassemble and assemble - Google Patents
Rotary assembly of rotary blowout preventer easy to disassemble and assemble Download PDFInfo
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- CN109577903B CN109577903B CN201811613654.6A CN201811613654A CN109577903B CN 109577903 B CN109577903 B CN 109577903B CN 201811613654 A CN201811613654 A CN 201811613654A CN 109577903 B CN109577903 B CN 109577903B
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- 238000007789 sealing Methods 0.000 claims abstract description 97
- 230000000670 limiting effect Effects 0.000 claims description 42
- 238000004513 sizing Methods 0.000 claims description 32
- 239000003292 glue Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 10
- 210000004907 gland Anatomy 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000010073 coating (rubber) Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
The invention relates to the technical field of rotating parts of rotary blowout preventers, in particular to an easy-to-disassemble rotary blowout preventer rotating assembly. Compared with the existing rotary blowout preventer rotating assembly, the invention changes the connection modes among the upper rubber core connecting seat and the upper rubber core mounting cylinder, among the upper rubber core mounting cylinder, the upper movable sealing sleeve and the mandrel, and among the mandrel, the lower movable sealing sleeve and the lower rubber core mounting seat, so that the invention is easier to assemble and disassemble, can repair and maintain the rotary control head rotating assembly on site, effectively reduces the maintenance and transportation cost, and effectively solves the problems of difficult replacement of movable sealing failure, long maintenance period and high cost of the existing rotary assembly.
Description
Technical Field
The invention relates to the technical field of rotating parts of rotary blowout preventers, in particular to a rotary assembly of a rotary blowout preventer, which is easy to disassemble and assemble.
Background
Rotary blowout preventers are one of the key devices to implement underbalanced drilling and pressure controlled drilling. The main function of the rotary sealing device is to provide wellhead pressure control and realize rotary sealing. The rotary assembly is a main component of the rotary blowout preventer and is an important component for realizing wellhead sealing under the rotation condition of the drilling tool.
The current rotating assembly is shown in figure 1, the mounting mode of the sizing core is that the sizing core seat is connected with the sizing core through bolts, then the sizing core seat is placed in the sizing core cylinder, and then a sizing core seat gland is connected with the sizing core cylinder in a threaded mode to compress the sizing core seat. In the field operation process, the wellhead vibration and rotation cause the reverse buckling phenomenon of the gluing core barrel and the gluing core gland of the rotating assembly in the rotating process, so that the eccentric wear, scrapping and wellhead sealing failure of the rotating assembly are caused.
Meanwhile, the upper dynamic seal concrete connection mode of the rotating assembly is as follows: the upper dynamic seal is connected with the mandrel of the rotating assembly in a threaded manner, in order to prevent the upper dynamic seal from tripping in the rotating process, the upper dynamic seal and the mandrel are welded at a plurality of points on the contact plane of the upper dynamic seal and the mandrel respectively, so that the upper dynamic seal is prevented from being reversely buckled in the rotating process, and the upper adhesive core barrel is connected with the upper dynamic seal in a bolt connection manner. In the field operation process, the phenomenon that the upper dynamic seal fails due to long-term rotary abrasion in the rotation process can occur, and as the upper dynamic seal and the mandrel are welded at a plurality of points respectively, when the upper dynamic seal is detached and replaced, a plurality of welding points of the upper dynamic seal and the mandrel are required to be polished and removed, the mandrel can be damaged by field treatment, and the bearing is damaged; when the maintenance and replacement are impossible on site, only the maintenance can be carried out in a factory, the maintenance period is long, and the transportation cost is high.
In addition, the lower dynamic seal of the rotating assembly is arranged in the mandrel in a threaded manner, in order to prevent the lower dynamic seal from tripping in the rotating process, a plurality of points are taken on the contact plane of the lower dynamic seal and the mandrel to be respectively welded, and a lower rubber core seat of the rotating assembly is connected with the lower dynamic seal in a bolt connection manner. In the field operation process, the phenomenon that the lower seal fails due to long-term rotary abrasion in the rotation process can occur, and as the lower seal and the mandrel are welded at a plurality of points respectively, when the lower dynamic seal is disassembled and replaced, a plurality of welding points of the lower seal and the mandrel are required to be polished and removed, the mandrel is easily damaged in the field treatment, and the bearing is damaged; when the maintenance and replacement are impossible on site, only the maintenance can be carried out in a factory, the maintenance period is long, and the transportation cost is high.
The rotary assemblies of domestic rotary blowout preventers produced by domestic Guanghan drilling and production stations, china petrochemical victory drilling and production stations and other petroleum equipment companies are connected in a threaded manner by adopting a lower dynamic seal and welded on bearings of the rotary assemblies.
As can be seen from the above description, the rotary assembly cannot be disassembled and assembled on site due to the limitation of the assembly mode, so that the rotary assembly needs to be maintained by a manufacturer, which causes the following problems:
(1) The increase in transportation costs for the replacement of the rotating assembly, while affecting the site work, results in an increase in the operation costs. Sometimes, in order to avoid the influence on site construction caused by the failure of one rotating assembly, two assemblies are required to be simultaneously arranged, so that the use efficiency of the rotating assembly and the rotating blowout preventer is reduced.
(2) The transportation and maintenance costs of the rotary assembly to the factory are high.
Disclosure of Invention
The invention provides a rotary blowout preventer rotating assembly easy to disassemble and assemble, which overcomes the defects of the prior art, and can effectively solve the problems that the conventional rotary blowout preventer rotating assembly is difficult to disassemble and assemble on site and the maintenance cost is high in factory returning.
The technical scheme of the invention is realized by the following measures: a rotary assembly of a rotary blowout preventer easy to disassemble and assemble comprises a rubberizing core connecting seat, a rubberizing core mounting cylinder, a mandrel, an upper moving sealing sleeve, a lower moving sealing sleeve and a lower rubberizing core mounting seat; an upper chuck and a lower chuck for fixedly connecting with the sizing core are arranged at intervals from top to bottom on the outer side of the sizing core connecting seat, and the upper chuck and the top of the sizing core mounting cylinder are fixedly mounted in a bolt connection mode from top to bottom; an upper connecting boss is integrally fixed on the inner side of the top of the upper moving seal sleeve, and the bottom of the sizing core mounting cylinder, the upper connecting boss of the upper moving seal sleeve and the top of the mandrel are fixedly mounted in a bolt connection mode from top to bottom; a lower connecting boss is integrally fixed on the inner side of the bottom of the lower movable sealing sleeve, and the bottom of the mandrel, the lower connecting boss of the lower movable sealing sleeve and the lower rubber core mounting seat are fixedly mounted in a bolt connection mode from top to bottom; the outer side of the mandrel is fixedly provided with a shell at intervals, and a bearing assembly positioned between the upper moving sealing sleeve and the lower moving sealing sleeve is fixedly arranged between the outer side of the mandrel and the inner side of the shell.
The following are further optimizations and/or improvements to the above-described inventive solution:
the rubberizing core connecting seat comprises an upper mounting seat body, an upper chuck is arranged on the outer side of the upper part of the upper mounting seat body, a lower chuck which is fixedly connected with the top of the rubberizing core is arranged on the outer side of the lower part of the upper mounting seat body, a limiting convex ring is arranged at the bottom of the upper mounting seat body, and an inner limiting concave table which is used for limiting the axial direction of the driver sleeve is arranged on the inner side of the upper part of the upper mounting seat body; first threaded holes are circumferentially distributed on the upper chuck at intervals, and second threaded holes used for being connected with the top of the upper rubber core are circumferentially distributed on the lower chuck at intervals; a distance for installing a fastener into the second threaded hole is arranged between the upper chuck and the lower chuck; the inner side of the upper mounting seat body at the inner limit concave table is provided with a thread section for fixedly connecting with the driver sleeve; the longitudinal section of the limiting convex ring is trapezoid with wide upper part and narrow lower part.
The upper rubber core mounting cylinder comprises a rubber core cylinder body, upper threaded blind holes which correspond to the first threaded holes of the upper rubber core connecting seat up and down are arranged at the top end of the rubber core cylinder body at intervals along the circumference, and an upper chuck is fixedly connected with the top of the upper rubber core mounting cylinder through the first threaded holes which correspond to the upper threaded holes up and down and the upper threaded blind holes in a fixed mounting bolt; sealing grooves are formed in the top end of the rubber core barrel body at intervals along the circumference of the inner side of the upper threaded blind hole, and sealing elements are fixedly arranged in the sealing grooves; the inner side of the bottom of the rubber core cylinder body is provided with a connecting ring table, connecting threaded holes which correspond to the threaded holes at the top of the mandrel up and down are arranged on the connecting ring table along the circumference at intervals, and a limiting ring groove for axially limiting the top of the upper moving sealing sleeve is arranged at the bottom end of the connecting ring table.
The upper moving sealing sleeve comprises an upper sealing sleeve body, an upper connecting boss is integrally fixed on the inner side of the top of the upper sealing sleeve body, first connecting holes which correspond to screw holes of the top of a mandrel of the rotating assembly up and down are arranged on the upper connecting boss at intervals along the circumference, and the bottom of the gluing core mounting cylinder, the upper connecting boss of the upper sealing sleeve body and the top of the mandrel are fixedly connected through the corresponding connecting screw holes, the screw holes of the top of the mandrel and the fixing and mounting bolts in the first connecting holes; the bottom end of the upper connecting boss forms a first limiting ring table for axially limiting the top of the mandrel; the upper sealing sleeve body top outside the upper connecting boss is provided with an upper sealing groove with an upward opening along the circumferential interval, a sealing element is fixedly installed in the upper sealing groove, the upper part of the upper sealing sleeve body is integrally fixed with an outer boss sleeved in the limiting ring groove, and the upper sealing groove is arranged at the top of the outer boss.
The lower moving sealing sleeve comprises a lower sealing sleeve body, a lower connecting boss is integrally fixed on the inner side of the bottom of the lower sealing sleeve body, second connecting holes which are vertically corresponding to screw holes at the bottom of the mandrel are circumferentially arranged on the lower connecting boss at intervals, the second connecting holes are vertically corresponding to the screw holes of the lower glue core seat, and the bottom of the mandrel, the lower connecting boss of the lower sealing sleeve body and the lower glue core seat are simultaneously and fixedly connected through screw holes at the bottom of the mandrel, the second connecting holes and screw holes of the lower glue core seat which are vertically corresponding to each other; the top end of the lower connecting boss forms a second limiting ring table for axially limiting the bottom of the mandrel, and the bottom of the mandrel is sleeved in the second limiting ring table.
An upper oil jacket sleeve and an upper baffle sleeve with a T-shaped longitudinal section are arranged between the outer side of the lower part of the upper movable sealing sleeve and the inner side of the upper end of the shell from inside to outside, a transverse section of the upper baffle sleeve is fixed on the top end of the shell, an upper limit sleeve is fixedly arranged at the bottom end of the upper baffle sleeve between the outer side of the lower end of the upper movable sealing sleeve and the inner side of the shell, the transverse section of the upper oil jacket sleeve is fixedly arranged on the transverse section of the upper baffle sleeve, and a sealing piece is fixedly arranged between the upper limit sleeve and the upper oil jacket; a lower stop sleeve is arranged between the outer side of the lower moving seal sleeve and the inner side of the shell, the bottom end of the shell is fixed on the outer side of the lower part of the lower stop sleeve, a lower oil jacket with a T-shaped longitudinal section is sleeved between the outer side of the lower moving seal sleeve and the lower stop sleeve, the transverse section of the lower oil jacket is fixedly arranged with the bottom end of the lower stop sleeve, a lower limit sleeve sleeved on the outer side of the upper part of the lower moving seal sleeve is fixedly arranged at the top of the lower stop sleeve, and a sealing element is fixedly arranged between the lower limit sleeve and the lower oil jacket; the bearing assembly comprises a first bearing, a second bearing, a third bearing, a fourth bearing and a fifth bearing, and the first bearing, the second bearing, the third bearing, the fourth bearing and the fifth bearing are axially and limitedly arranged between the mandrel and the shell from top to bottom.
Compared with the existing rotary blowout preventer rotating assembly, the invention changes the connection modes among the upper rubber core connecting seat and the upper rubber core mounting cylinder, among the upper rubber core mounting cylinder, the upper movable sealing sleeve and the mandrel, and among the mandrel, the lower movable sealing sleeve and the lower rubber core mounting seat, so that the invention is easier to assemble and disassemble, can repair and maintain the rotary control head rotating assembly on site, effectively reduces the maintenance and transportation cost, and effectively solves the problems of difficult replacement of movable sealing failure, long maintenance period and high cost of the existing rotary assembly.
Drawings
FIG. 1 is a schematic diagram of a front cross-sectional structure of a conventional rotary blowout preventer rotating assembly.
Fig. 2 is a schematic diagram of a cross-sectional front view of a preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of an enlarged sectional front view of the adhesive core connecting seat.
Fig. 4 is an enlarged schematic view of the mounting cylinder of the sizing core in front section.
Fig. 5 is an enlarged schematic view of the upper moving seal sleeve in front section.
Fig. 6 is an enlarged schematic view of the structure of the lower moving seal sleeve in front section.
The codes in the drawings are respectively: 1 is a rubberizing core connecting seat, 2 is a rubberizing core mounting cylinder, 3 is a mandrel, 4 is an upper moving seal sleeve, 5 is a lower moving seal sleeve, 6 is a lower rubberizing core mounting seat, 7 is an rubberizing core, 8 is a lower chuck, 9 is an upper connecting boss, 10 is a lower connecting boss, 11 is a shell, 12 is an upper mounting seat body, 13 is a limiting convex ring, 14 is an inner limiting concave table, 15 is a first threaded hole, 16 is a second threaded hole, 17 is a rubberizing core cylinder body, 18 is an upper threaded blind hole, 19 is a sealing groove, 20 is a sealing piece, 21 is a connecting ring table, 22 is a limiting ring groove, 23 is an upper seal sleeve body, 24 is a first connecting hole, 25 is a first limiting ring table, 26 is an upper sealing groove, 27 is an outer boss, 28 is a lower seal sleeve body, 29 is a second connecting hole, 30 is a second limiting ring table, 31 is an upper oil jacket, 32 is an upper baffle sleeve, 33 is an upper baffle sleeve, 34 is a lower baffle sleeve, 35 is a lower oil jacket, 36 is a lower baffle sleeve, 37 is a first bearing, 38 is a second bearing, 39 is a third bearing, 40 is a fourth bearing, 41 is a fifth bearing, 42 is a sizing core seat, 43 is a sizing core seat gland, 44 is a sizing core barrel, 45 is a driver sleeve, 46 is an upper dynamic seal, 47 is a lower dynamic seal, 48 is a lower sizing core seat, 49 is a lower sizing core, 50 is an upper retainer ring, 51 is a lower retainer ring, 52 is an upper chuck, and 53 is a connecting threaded hole.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 2 of the specification, for example: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 2 of the specification.
The invention is further described below with reference to examples and figures:
as shown in fig. 2 to 6, the rotary blowout preventer rotating assembly easy to disassemble and assemble comprises a rubber coating core connecting seat 1, a rubber coating core mounting cylinder 2, a mandrel 3, an upper moving sealing sleeve 4, a lower moving sealing sleeve 5 and a lower rubber coating core mounting seat 6; the outer side of the rubberizing core connecting seat 1 is provided with an upper chuck 52 and a lower chuck 8 which are fixedly connected with the rubberizing core 7 from top to bottom at intervals, and the upper chuck 52 and the top of the rubberizing core mounting cylinder 2 are fixedly mounted in a bolt connection mode from top to bottom; an upper connecting boss 9 is integrally fixed on the inner side of the top of the upper moving seal sleeve 4, and the bottom of the sizing core mounting cylinder 2, the upper connecting boss 9 of the upper moving seal sleeve 4 and the top of the mandrel 3 are fixedly mounted in a bolt connection mode from top to bottom; a lower connecting boss 10 is integrally fixed on the inner side of the bottom of the lower moving seal sleeve 5, and the bottom of the mandrel 3, the lower connecting boss 10 of the lower moving seal sleeve 5 and the lower rubber core mounting seat 6 are fixedly mounted in a bolt connection mode from top to bottom; a shell 11 is fixedly arranged at intervals outside the mandrel 3, and a bearing assembly positioned between the upper moving sealing sleeve 4 and the lower moving sealing sleeve 5 is fixedly arranged between the outside of the mandrel 3 and the inside of the shell 11.
The sizing core connecting seat 1 replaces the sizing core seat 42 and the sizing core seat gland 43 of the existing rotary blowout preventer rotating assembly, and the sizing core connecting seat 1 and the sizing core mounting cylinder 2 replace the screw thread connecting mode of the existing sizing core cylinder 44 and the sizing core seat gland 43 in a screw thread connecting mode, so that the invention effectively avoids the occurrence of wellhead sealing failure, eccentric wear and scrapping of the rotating assembly caused by the inverted buckle at the screw thread connecting position of the existing sizing core cylinder 44 and the sizing core seat gland 43 in the rotating assembly rotating process on the premise of easy disassembly and assembly, thereby effectively prolonging the service life of the rotating assembly. Because the rubber core mounting cylinder 2 and the rubber core connecting seat 1 are connected by bolts, the bolt connection mode has an axial limiting effect on the rubber core connecting seat 1, so that a limiting table is not required to be arranged in the rubber core mounting cylinder 2, and the structure of the invention is simplified.
After the sealing of the upper moving sealing sleeve 4 fails, the bolts can be directly dismounted on site, the rubber core mounting cylinder 2 is taken down, and the upper moving sealing sleeve 4 is taken down for replacement; therefore, the upper moving sealing sleeve 4 and the rubber core mounting cylinder 2 are arranged in a structure, so that the upper moving sealing sleeve 4 is easy to disassemble and assemble, and the condition that the upper moving sealing sleeve 4 damages parts such as the mandrel 3 and the bearing is effectively prevented.
After the sealing failure of the lower moving sealing sleeve 5, the bolts can be directly dismounted on site, the lower rubber core mounting seat 6 is dismounted, and the lower moving sealing sleeve 5 is dismounted for replacement; therefore, the structure of the lower moving sealing sleeve 5 is easy to disassemble and assemble, and the condition that the lower moving sealing sleeve 5 damages parts such as the mandrel 3 and the bearing is effectively prevented from being disassembled.
Compared with the existing rotary blowout preventer rotating assembly, the invention changes the connection modes among the upper rubber core connecting seat 1, the upper rubber core mounting cylinder 2, the upper movable sealing sleeve 4 and the mandrel 3, the lower movable sealing sleeve 5 and the lower rubber core mounting seat 6, so that the invention is easier to assemble and disassemble, can repair and maintain the rotary control head rotating assembly on site, effectively reduces the maintenance and transportation cost, and effectively solves the problems of difficult replacement of movable sealing failure, long maintenance period and high cost of the existing rotary assembly.
The rotary assembly of the rotary blowout preventer which is easy to disassemble and assemble can be further optimized or/and improved according to actual needs:
as shown in fig. 3, the rubberizing core connecting seat 1 comprises an upper mounting seat body 12, an upper chuck 52 is arranged at the outer side of the upper part of the upper mounting seat body 12, a lower chuck 8 which is fixedly connected with the top of the rubberizing core 7 is arranged at the outer side of the lower part of the upper mounting seat body 12, a limiting convex ring 13 is arranged at the bottom of the upper mounting seat body 12, and an inner limiting concave table 14 which is used for axially limiting a driver sleeve 45 is arranged at the inner side of the upper part of the upper mounting seat body 12; first threaded holes 15 are circumferentially distributed at intervals on the upper chuck 52, and second threaded holes 16 for connection with the top of the upper core 7 are circumferentially distributed at intervals on the lower chuck 8; a space for installing the fastener into the second threaded hole 16 is arranged between the upper chuck 52 and the lower chuck 8; the inner side of the upper mounting seat body 12 at the inner limit concave table 14 is provided with a thread section for fixedly connecting with a driver sleeve 45; the longitudinal section of the limiting convex ring 13 is trapezoid with wide upper part and narrow lower part.
The upper chuck 52 is fixedly connected with the top of the rubber core mounting cylinder 2 through a mounting bolt in a threaded hole of the upper chuck and the top of the rubber core mounting cylinder.
As shown in fig. 4, the rubber core mounting cylinder 2 comprises a rubber core cylinder body 17, upper threaded blind holes 18 corresponding to the first threaded holes 15 of the rubber core connecting seat 1 up and down are arranged at the top end of the rubber core cylinder body 17 at intervals along the circumference, and an upper chuck 52 is fixedly connected with the top of the rubber core mounting cylinder 2 through the first threaded holes 15 corresponding up and down and the upper threaded blind holes 18 internally and fixedly provided with mounting bolts; the top end of the rubber core barrel 17 at the inner side of the upper threaded blind hole 18 is provided with sealing grooves 19 at intervals along the circumference, and sealing elements 20 are fixedly arranged in the sealing grooves 19; a connecting ring table 21 is arranged on the inner side of the bottom of the rubber core barrel 17, connecting threaded holes 53 which correspond to the threaded holes on the top of the mandrel 3 up and down are arranged on the connecting ring table 21 at intervals along the circumference, and a limiting ring groove 22 for limiting the top of the upward-moving sealing sleeve 4 axially is arranged at the bottom end of the connecting ring table 21.
The rubber core cylinder 17 is fixedly connected with the rubber core connecting seat 1 by installing bolts in the upper threaded blind holes 18 of the rubber core cylinder 17 and the first threaded holes 15 of the upper chuck 52 of the rubber core connecting seat 1.
As shown in fig. 5, the upper moving seal sleeve 4 comprises an upper seal sleeve body 23, an upper connecting boss 9 is integrally fixed on the inner side of the top of the upper seal sleeve body 23, first connecting holes 24 corresponding to screw holes at the top of the mandrel 3 up and down are arranged on the upper connecting boss 9 along the circumference at intervals, and the bottom of the rubberizing core mounting cylinder 2, the upper connecting boss 9 of the upper seal sleeve body 23 and the top of the mandrel 3 are fixedly connected at the same time through connecting screw holes 53 corresponding up and down, screw holes at the top of the mandrel 3 and fixing mounting bolts in the first connecting holes 24; the bottom end of the upper connecting boss 9 forms a first limiting ring table 25 for axially limiting the top of the mandrel 3; an upper sealing sleeve 26 with an upward opening is arranged at the top of the upper sealing sleeve body 23 at the outer side of the upper connecting boss 9 along the circumferential interval, a sealing element 20 is fixedly arranged in the upper sealing sleeve 26, an outer boss 27 sleeved in the limiting ring groove 22 is integrally fixed at the upper part of the upper sealing sleeve body 23, and the upper sealing sleeve 26 is arranged at the top of the outer boss 27.
The rubber core cylinder 17, the upper moving seal sleeve 4 and the mandrel 3 are connected into a whole by installing bolts in the threaded holes 53 of the connecting ring table 21, the first connecting hole 24 of the upper moving seal sleeve 4 and the threaded blind hole at the top of the mandrel 3 which are mutually corresponding up and down.
As shown in fig. 6, the lower moving seal sleeve 5 comprises a lower seal sleeve body 28, a lower connecting boss 10 is integrally fixed on the inner side of the bottom of the lower seal sleeve body 28, second connecting holes 29 which correspond to screw holes at the bottom of the mandrel 3 up and down are arranged on the lower connecting boss 10 at intervals along the circumference, the second connecting holes 29 correspond to screw holes of the lower rubber core mounting seat 6 up and down, and the bottom of the mandrel 3, the lower connecting boss 10 of the lower seal sleeve body 28 and the lower rubber core mounting seat 6 are fixedly connected through fixing mounting bolts in the screw holes at the bottom of the mandrel 3, the second connecting holes 29 and the screw holes of the lower rubber core mounting seat 6 which correspond up and down; the top end of the lower connecting boss 10 forms a second limiting ring table 30 for axially limiting the bottom of the mandrel 3, and the bottom of the mandrel 3 is sleeved in the second limiting ring table 30.
The screw hole of the lower rubber core mounting seat 6, the second connecting hole 29 of the lower moving seal sleeve 5 and the screw hole at the bottom of the mandrel 3 correspond up and down, namely the mandrel 3, the lower moving seal sleeve 5 and the lower rubber core mounting seat 6 can be connected into a whole through the same bolt, so that the disassembly and assembly operations are simpler.
As shown in fig. 2, an upper oil jacket 31 and an upper baffle sleeve 32 with a T-shaped longitudinal section are arranged between the outer side of the lower part of the upper sealing sleeve 4 and the inner side of the upper end of the shell 11 from inside to outside, a transverse section of the upper baffle sleeve 32 is fixed on the top end of the shell 11, an upper limit sleeve 33 is fixedly arranged at the bottom end of the upper baffle sleeve 32 between the outer side of the lower end of the upper sealing sleeve 4 and the inner side of the shell 11, the transverse section of the upper oil jacket 31 is fixedly arranged on the transverse section of the upper baffle sleeve 32, and a sealing element 20 is fixedly arranged between the upper limit sleeve 33 and the upper oil jacket 31; a lower stop sleeve 34 is arranged between the outer side of the lower moving seal sleeve 5 and the inner side of the shell 11, the bottom end of the shell 11 is fixed on the outer side of the lower part of the lower stop sleeve 34, a lower oil jacket 35 with a T-shaped longitudinal section is sleeved between the outer side of the lower moving seal sleeve 5 and the lower stop sleeve 34, the transverse section of the lower oil jacket 35 is fixedly arranged with the bottom end of the lower stop sleeve 34, a lower limit sleeve 36 sleeved on the outer side of the upper part of the lower moving seal sleeve 5 is fixedly arranged at the top of the lower stop sleeve 34, and a sealing element 20 is fixedly arranged between the lower limit sleeve 36 and the lower oil jacket 35; the bearing assembly comprises a first bearing 37, a second bearing 38, a third bearing 39, a fourth bearing 40 and a fifth bearing 41, wherein the first bearing 37, the second bearing 38, the third bearing 39, the fourth bearing 40 and the fifth bearing 41 are axially and limitedly arranged between the mandrel 3 and the shell 11 from top to bottom.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (2)
1. The rotary assembly of the rotary blowout preventer easy to disassemble and assemble is characterized by comprising a rubberizing core connecting seat, a rubberizing core mounting cylinder, a mandrel, an upper moving sealing sleeve, a lower moving sealing sleeve and a lower rubberizing core mounting seat; an upper chuck and a lower chuck for fixedly connecting with the sizing core are arranged at intervals from top to bottom on the outer side of the sizing core connecting seat, and the upper chuck and the top of the sizing core mounting cylinder are fixedly mounted in a bolt connection mode from top to bottom; an upper connecting boss is integrally fixed on the inner side of the top of the upper moving seal sleeve, and the bottom of the sizing core mounting cylinder, the upper connecting boss of the upper moving seal sleeve and the top of the mandrel are fixedly mounted in a bolt connection mode from top to bottom; a lower connecting boss is integrally fixed on the inner side of the bottom of the lower movable sealing sleeve, and the bottom of the mandrel, the lower connecting boss of the lower movable sealing sleeve and the lower rubber core mounting seat are fixedly mounted in a bolt connection mode from top to bottom; the outer side of the mandrel is fixedly provided with a shell at intervals, a bearing assembly positioned between the upper moving sealing sleeve and the lower moving sealing sleeve is fixedly arranged between the outer side of the mandrel and the inner side of the shell, the upper rubber core connecting seat comprises an upper mounting seat body, an upper chuck is arranged at the outer side of the upper part of the upper mounting seat body, a lower chuck fixedly connected with the top of the upper rubber core is arranged at the outer side of the lower part of the upper mounting seat body, a limiting convex ring is arranged at the bottom of the upper mounting seat body, and an inner limiting concave table for axially limiting the driver sleeve is arranged at the inner side of the upper part of the upper mounting seat body; first threaded holes are circumferentially distributed on the upper chuck at intervals, and second threaded holes used for being connected with the top of the upper rubber core are circumferentially distributed on the lower chuck at intervals; a distance for installing a fastener into the second threaded hole is arranged between the upper chuck and the lower chuck; the inner side of the upper mounting seat body at the inner limit concave table is provided with a thread section for fixedly connecting with the driver sleeve; the longitudinal section of the limiting convex ring is in a trapezoid shape with a wide upper part and a narrow lower part, the upper rubber core mounting cylinder comprises a rubber core cylinder body, upper threaded blind holes which correspond to the first threaded holes of the upper rubber core connecting seat up and down are arranged at the top end of the rubber core cylinder body at intervals along the circumference, and the upper chuck is fixedly connected with the top of the upper rubber core mounting cylinder through the first threaded holes which correspond to the upper threaded holes and the upper threaded blind holes up and down and fixing mounting bolts in the upper threaded blind holes; sealing grooves are formed in the top end of the rubber core barrel body at intervals along the circumference of the inner side of the upper threaded blind hole, and sealing elements are fixedly arranged in the sealing grooves; a connecting ring table is arranged on the inner side of the bottom of the rubber core barrel, connecting threaded holes which correspond to the threaded holes at the top of the mandrel up and down are arranged on the connecting ring table at intervals along the circumference, a limiting ring groove for axially limiting the top of the upper moving seal sleeve is arranged at the bottom end of the connecting ring table, the upper moving seal sleeve comprises an upper seal sleeve body, an upper connecting boss is integrally fixed on the inner side of the top of the upper seal sleeve body, first connecting holes which correspond to the threaded holes at the top of the mandrel up and down are arranged on the upper connecting boss at intervals along the circumference, and the bottom of the rubber core installation barrel, the upper connecting boss of the upper seal sleeve body and the top of the mandrel are fixedly connected through the connecting threaded holes which correspond to each other up and down, the threaded holes at the top of the mandrel and the first connecting holes at the same time; the bottom end of the upper connecting boss forms a first limiting ring table for axially limiting the top of the mandrel; an upper sealing sleeve body is arranged at the top of the upper sealing sleeve body at the outer side of the upper connecting boss at intervals along the circumference, a sealing piece is fixedly arranged in the upper sealing sleeve, an outer boss sleeved in a limit ring groove is integrally fixed at the upper part of the upper sealing sleeve body, the upper sealing sleeve is arranged at the top of the outer boss, a lower sealing sleeve comprises a lower sealing sleeve body, a lower connecting boss is integrally fixed at the inner side of the bottom of the lower sealing sleeve body, second connecting holes which are vertically corresponding to screw holes at the bottom of a mandrel are circumferentially arranged on the lower connecting boss at intervals, the second connecting holes are vertically corresponding to screw holes of a lower glue core seat, and the bottom of the mandrel, the lower connecting boss of the lower sealing sleeve body and the lower glue core seat are simultaneously and fixedly connected through fixing and installing bolts in the screw holes of the bottom of the mandrel, the second connecting holes and the screw holes of the lower glue core seat; the top end of the lower connecting boss forms a second limiting ring table for axially limiting the bottom of the mandrel, and the bottom of the mandrel is sleeved in the second limiting ring table.
2. The rotary blowout preventer rotating assembly easy to disassemble and assemble according to claim 1, wherein an upper oil jacket and an upper baffle sleeve with a T-shaped longitudinal section are arranged between the outer side of the lower part of the upper movable sealing sleeve and the inner side of the upper end of the shell from inside to outside, a transverse section of the upper baffle sleeve is fixed on the top end of the shell, an upper limit sleeve is fixedly arranged at the bottom end of the upper baffle sleeve between the outer side of the lower end of the upper movable sealing sleeve and the inner side of the shell, the transverse section of the upper oil jacket is fixedly arranged on the transverse section of the upper baffle sleeve, and a sealing element is fixedly arranged between the upper limit sleeve and the upper oil jacket; a lower stop sleeve is arranged between the outer side of the lower moving seal sleeve and the inner side of the shell, the bottom end of the shell is fixed on the outer side of the lower part of the lower stop sleeve, a lower oil jacket with a T-shaped longitudinal section is sleeved between the outer side of the lower moving seal sleeve and the lower stop sleeve, the transverse section of the lower oil jacket is fixedly arranged with the bottom end of the lower stop sleeve, a lower limit sleeve sleeved on the outer side of the upper part of the lower moving seal sleeve is fixedly arranged at the top of the lower stop sleeve, and a sealing element is fixedly arranged between the lower limit sleeve and the lower oil jacket; the bearing assembly comprises a first bearing, a second bearing, a third bearing, a fourth bearing and a fifth bearing, and the first bearing, the second bearing, the third bearing, the fourth bearing and the fifth bearing are axially and limitedly arranged between the mandrel and the shell from top to bottom.
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| CN201811613654.6A CN109577903B (en) | 2018-12-27 | 2018-12-27 | Rotary assembly of rotary blowout preventer easy to disassemble and assemble |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811613654.6A CN109577903B (en) | 2018-12-27 | 2018-12-27 | Rotary assembly of rotary blowout preventer easy to disassemble and assemble |
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| CN109577903A CN109577903A (en) | 2019-04-05 |
| CN109577903B true CN109577903B (en) | 2024-04-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112253035A (en) * | 2020-10-09 | 2021-01-22 | 盐城市荣嘉机械制造有限公司 | Well drilling blowout prevention structure and device thereof |
| CN112253033B (en) * | 2020-12-08 | 2022-12-27 | 中国石油天然气集团有限公司 | Combined type large-drift-diameter rotary control head rotary assembly |
| CN117948077B (en) * | 2024-03-27 | 2024-06-14 | 山西泰宝科技有限公司 | Rotary assembly sealing device of rotary blowout preventer |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5647444A (en) * | 1992-09-18 | 1997-07-15 | Williams; John R. | Rotating blowout preventor |
| US5662181A (en) * | 1992-09-30 | 1997-09-02 | Williams; John R. | Rotating blowout preventer |
| CN101182760A (en) * | 2007-10-29 | 2008-05-21 | 金湖卫东机械有限公司 | Under balance drilling revolution control device |
| CN201354615Y (en) * | 2009-01-14 | 2009-12-02 | 大庆油田有限责任公司 | Gas underbalance well drilling rotary blowout preventer |
| CN101852069A (en) * | 2010-02-09 | 2010-10-06 | 西南石油大学 | Supporting rotating control head of underbalanced coal bed methane well drilling |
| CN201963245U (en) * | 2011-01-26 | 2011-09-07 | 四川内江宏生石油机械有限公司 | Easy-mounting and easy-dismounting rotary blowout preventer |
| CN202493216U (en) * | 2012-04-01 | 2012-10-17 | 中国石油集团西部钻探工程有限公司 | Easily assembled and disassembled kelly bar driver |
| CN103775018A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Rotating seal assembly |
| CN105257235A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Rotary blowout preventer shell for large-size wellbore and shell connecting device |
| CN106639961A (en) * | 2017-02-10 | 2017-05-10 | 江苏卫东机械有限公司 | Environment-friendly closed rotary blowout preventer for unbalanced drilling |
| CN206319850U (en) * | 2016-10-11 | 2017-07-11 | 中国石油集团渤海钻探工程有限公司 | Continuous cyclic drilling realizing active sealing formula swivel control head |
| CN206530707U (en) * | 2017-02-10 | 2017-09-29 | 江苏卫东机械有限公司 | The lower seal of environmentally friendly closed rotating blowout preventer |
| CN209494545U (en) * | 2018-12-27 | 2019-10-15 | 中国石油集团西部钻探工程有限公司 | Rotating blowout preventer rotation assembly easy to assemble |
-
2018
- 2018-12-27 CN CN201811613654.6A patent/CN109577903B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5647444A (en) * | 1992-09-18 | 1997-07-15 | Williams; John R. | Rotating blowout preventor |
| US5662181A (en) * | 1992-09-30 | 1997-09-02 | Williams; John R. | Rotating blowout preventer |
| CN101182760A (en) * | 2007-10-29 | 2008-05-21 | 金湖卫东机械有限公司 | Under balance drilling revolution control device |
| CN201354615Y (en) * | 2009-01-14 | 2009-12-02 | 大庆油田有限责任公司 | Gas underbalance well drilling rotary blowout preventer |
| CN101852069A (en) * | 2010-02-09 | 2010-10-06 | 西南石油大学 | Supporting rotating control head of underbalanced coal bed methane well drilling |
| CN201963245U (en) * | 2011-01-26 | 2011-09-07 | 四川内江宏生石油机械有限公司 | Easy-mounting and easy-dismounting rotary blowout preventer |
| CN202493216U (en) * | 2012-04-01 | 2012-10-17 | 中国石油集团西部钻探工程有限公司 | Easily assembled and disassembled kelly bar driver |
| CN103775018A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Rotating seal assembly |
| CN105257235A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Rotary blowout preventer shell for large-size wellbore and shell connecting device |
| CN206319850U (en) * | 2016-10-11 | 2017-07-11 | 中国石油集团渤海钻探工程有限公司 | Continuous cyclic drilling realizing active sealing formula swivel control head |
| CN106639961A (en) * | 2017-02-10 | 2017-05-10 | 江苏卫东机械有限公司 | Environment-friendly closed rotary blowout preventer for unbalanced drilling |
| CN206530707U (en) * | 2017-02-10 | 2017-09-29 | 江苏卫东机械有限公司 | The lower seal of environmentally friendly closed rotating blowout preventer |
| CN209494545U (en) * | 2018-12-27 | 2019-10-15 | 中国石油集团西部钻探工程有限公司 | Rotating blowout preventer rotation assembly easy to assemble |
Non-Patent Citations (1)
| Title |
|---|
| 旋转环形防喷器结构分析及应用;曹月臣;;石油矿场机械;第42卷(第07期);第90页-第92页 * |
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Effective date of registration: 20201109 Address after: 100120 Beijing Xicheng District six laying Kang Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 West Drilling and Drilling Engineering Research Institute, 326 South Asia Road, Urumqi Economic and Technological Development Zone, Xinjiang Uygur Autonomous Region Applicant before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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